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I am sure it is not Windows OS..<br />
but after describing our topology do you Think our Exchange servers use it to send email through or receive through?? I do not think it does.. but how can I test that email sent or received does not go through that SMTP box ??
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I am sure it is not Windows OS..
but after describing our topology do you Think our Exchange servers use it to send email through or receive through?? I do not think it does.. but how can I test that email sent or received does not go through that SMTP box ??

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The purpose of SMTP server<br />
<br />
in our company , we have 2 Mailbox servers Members of a DAG<br />
2 other servers are CAS/HUB roles on each server.<br />
<br />
in the topology(diagram) , they have an SMTP server, I believe it is installed within Load balancer (I could be wrong), but I can ping the smtp server from within the network ex: ping smtp1.domain.com... I am sure it is not a windows box...because I tried the command Systeminfo /s smtp1.domain.com... it did know the system.<br />
<br />
Our Scanning box for email Spam and email viruses is hosted online by Micrsoft TMG.<br />
<br />
So, my Question is why would they have an SMTP server (it can be an appliance or whatever)?<br />
I though Exchange server is already an SMTP server....<br />
<br />
Any idea ?<br />
<br />
Thanks
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The purpose of SMTP server

in our company , we have 2 Mailbox servers Members of a DAG
2 other servers are CAS/HUB roles on each server.

in the topology(diagram) , they have an SMTP server, I believe it is installed within Load balancer (I could be wrong), but I can ping the smtp server from within the network ex: ping smtp1.domain.com... I am sure it is not a windows box...because I tried the command Systeminfo /s smtp1.domain.com... it did know the system.

Our Scanning box for email Spam and email viruses is hosted online by Micrsoft TMG.

So, my Question is why would they have an SMTP server (it can be an appliance or whatever)?
I though Exchange server is already an SMTP server....

Any idea ?

Thanks

The purpose of SMTP server

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.

Microsoft Forefront ISA Server

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.